set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

When pressure exerted on an enclosed liquid or gas at rest, is transmitted equally in all the directions, is in accordance with:

a) Archimedes' principle

b) Boyle's law

c) Pascal's law

d) Principle of floatation

Question : 2

A liquid is kept in a regular cylindrical vessel upto a certain height. If this vessel is replaced by another cylindrical vessel having half the area of cross-section of the bottom, the pressure on the bottom will

a) be increased to twice the earlier pressure

b) be reduced to half the earlier pressure

c) remain unaffected

d) be reduced to one-fourth the earlier pressure

Question : 3

Which one of the following statements regarding artificial satellite of the earth is incorrect?

a) The period of revolution is large if the radius of its orbit is large

b) A minimum velocity of 8 km/s is required by a satellite to orbit quite close to the earth

c) The orbital velocity depends on the mass of the satellite

d) The height of a geostationary satellite is about 36000 km from the earth.

Question : 4

The tendency of a liquid drop to contract and occupy minimum area is due to :

a) density

b) viscosity

c) surface tension

d) vapour pressure

Question : 5

Assertion :
The tidal waves in sea are primarily due to the gravitational effect of earth.
Reason :
The intensity of gravitational field of earth is maximum at the surface of earth.

a) Assertion is correct, reason is incorrect

b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion

c) Assertion is correct, reason is correct; reason is a correct explanation for assertion.

d) Assertion is incorrect, reason is correct.

Question : 6

Which type/types of pen uses/use capillary action in addition to gravity for flow of ink?

a) Gel pen

b) Ballpoint pen

c) Fountain pen

d) Both ballpoint and gel pens